features:<br /> -100%  and high quality.<br /> -63/37 rosin core solder.<br /> -flux 2.0%.<br /> -wire diameter: 0.8mm.<br /> -weight of one reel: 100g/3.5oz<br /> -melting point: 361⊂f/183⊂c.<br /> -good solderability， insulation resistance， no spatterin